Abstract: A cruise control systems for regulating vehicle speed comprises a system controller, a speed sensor, a fuel controller, and a driver interface. An operator of such cruise control system can input an upper set speed, and a lower set speed, individually or combined so as to define an allowable vehicle speed range. Accordingly, an operator of such cruise control system can modify the operating parameters of the cruise control system to correspond with the operators driving needs. An operator can define a relatively wide allowable speed range in the interest of fuel economy; alternatively an operator can define a relatively narrow allowable speed range in the interest of vehicle travel speed consistency.

Abstract: A device to regulate fuel consumption and speed utilizing a speed range rather than the set firm speed currently in use. Resulting in fuel and energy savings under non-level driving conditions and more closely follows the natural flow of traffic.